Weather strip for metallic window frames and sashes



' Feb. 14, 1933.

F. REESE 1,89?,643

WEATHER STRIP FOR METALLIC WINDOW FRAMES AND SASHES Filed July 20, 19512 Sheets-Sheet 1 F. REESE Filed July 20, 1931 2 Sheets-Sheet 2 Feb. 14,1933.

WEATHER STRIP FOR METALLIC WINDOW FRAMES AND SASHES u V I Patented Feb.14, 1933 UNI-TED STATES PATENT OFFICE V FRANK REESE, OF MINNEAPOLIS,MINNESOTA, ASSIGNOR T0 REESE METAL WEATHER STRIP (10., OF MINNEAPOLIS,MINNESOTA, A CORPORATION OF MINNESOTA WEATHER STRIP FOR METALLIC WINDOWFRAMES AND SASHES Application filed July 20, 1931. Serial No. 551,867.

' 5 oted, or attached by means of a sliding pivotal mechanism totheframe.

It is Well known that metallic window frames and sashes are now ingeneral use and the commercial forms thereof are made up of Z and otherangular bars, certain of the flanges of which overlap when the sashesare closed. Due to the required workingflt between a swingable metallicsash and its frame, there is considerable leakage of air and dustthrough the joints therebetween. These joints between metallic sashesand their frames are further subject to considerable variation in sizedue to careless fitting at the time of manufacture. As the bars fromwhich metallic frames and sashes are made are relatively light, they areoften sprung or bowed in shipping, handling or during installation,which further increases the width of the cracks therebetween.

The shapes of the bars used in a swingable metallic sash do not permit awiping contact of the sash with a flexible or spring weather strip, asin a wood sash and frame, but must close directly upon the weatherstrip. The sash structure is relatively light and is easily sprung outof the plane thereof by a stifl 0r bulky weather strip.

My improved weather strip permits a metallic sash to be closed with arelatively light pressure, and at the same time the weather strip willyield and adjust itself to the sash and its frame with cracks of variouswidths therebetween; or, where one or more of the sash or frame bars arebowed, said weather strip will effectively close the cracks and formweather tight joints therebetween without causing the sash to bind inits frame or be sprung out of its plane. 7

To the above end, generally stated, the invention consists of the noveldevices and combinations of devices hereinafter described and defined inthe claims.

7 Inthe accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views; 7

Referring to the drawings:

Fig. 1 is a fragmentary view in vertical section taken through a Windowopening in a building having secured therein a metallic window frame inwhich is mounted a horizontal swinging metallic window sash;

Fig. 2 is a View corresponding to the lower portion of the parts shownin Fig. 1 with the exception that the sash is partly open;

Fig. 3 is an enlarged view of the frame member and weather strip, asshown in Fig. 2;

Fig. 4 is a perspective view showing a section of the weather stripbefore the same is applied to the sash or frame;

Fig. 5 is a fragmentary detail View principally in section taken on theline 55 of Fig. 4; and r Fig. 6 is a view corresponding to Fig. 2 withthe exception that the sash is closed and two weather strips areemployed.

While the drawings are based on a hinged construction, the various viewsapply also to pivoted or sliding pivotal constructions,

all of which are included hereinafter under the term swingably mounted.

The numeral 7 indicates a building structure having a window opening 8in which a metallic window frame 9 is permanently secured and calked inthe customary manner. A glazed metallic sash 10 is mounted in the frame9 and secured thereto by hinges, not shown, for horizontal swinging,opening, and closing movements. The rectangularly arranged metallicmembers, which form the frame 9 and sash 10, are Z-bars, the flanges ofwhich are in planes parallel to said frame and sash. Adjacent Z-barscomprising'the frame 9 and sash 10 form, at the sides, tops and bottomsthereof, when the sash 10 is closed, box-like structures in which theflanges of said bars on each side of the window project in the samedirection and overlap the one with the other.

The parts thus far described are of standard and well knownconstruction.

Referring first to the weather strip 11, as shown in Figs. 1 to 55,inclusive, the same is a flat strip of spring metal having its baseformed as a laterally projecting flange 12, the

free longitudinal edge portion of which is folded upon itself andpressed together to form a hem 13 which strengthens said flange. Thisflange 12 rests on the face of the web of the frame 9, is securedthereto by screws 14 which hold the weather strip 11 substantiallyparallel to the inner flange of the Z-bar forming the frame 9 andlaterally spaced therefrom when the sash 10 is open, see Figs. 2 and 103. The weather strip 11 is wider than the adjacent flange of the frame9, so that it projects beyond the flange of the frame 9 and betweenadjacent flanges of the frame 9 and sash 10.

The weather strip 11, adjacent to the flange 12, is outwardly bulgedfrom the same side with the flange 12 to form a relatively wide bead 11which extends longitudinally of said strip. Between the bead 11 andflange 12 the weather strip 11 is reversely curved from its junctionwith the bead 11 and shaped to offset the flange 12 from the plane ofthe weather strip 11, as indicated at 11 to afford clearance for afillet, as will presently appear.

The free longitudinal edge portion of the weather strip 11 is tubular,as indicated at 15, to give a finished appearance to the weather strip11, stiffen the same against damage and prevent vibration (calledsinging) produced by a high wind. A yielding gasket 16 of felt, rubberor other suitable material is interposed between the weather strip 11and the adjacent flange of the frame 9 near the base thereof, see Fig.3. This gasket 16 at its outer longitudinal edge portion is attached tothe weather strip 11 outward of the bead 11, as shown, by wire staples17, see Figs. 4 and 5. It will be noted that the free longitudinal edgeof the gasket 16 is normally flush with the under side of the flange 12.

The portion 11 of the weather strip 11 offsets the flange 12 from thefillet between the member 9 and its adjacent flange and permits theflange 12 to rest flat on the member 9 and thereby hold the weatherstrip 11 in its proper relation to said flange of the frame 9. Inapplying the weather strip 11 to the member 9 the longitudinal edgeportion of the gasket 16 in striking the fillet will buckle at itstransverse center into the bead 11 and thereby reduce the width of saidgasket. This buckling of the gasket 16 is important as it preventsdistortion thereof that would prevent the longitudinal edge portions ofthe gasket 16 from evenly engaging the flange of the frame 9 throughouttheir entire length.

As previousy stated, the weather strip 11 is laterally spaced from theadjacent flange of the frame 9 when the sash 10 is open, and during thefinal closing movement said sash engages the weather strip 11 andsprings the same laterally into contact with the adjacent flange of theframe 9. It will thus be seen that the weather strip has contact withthe opposing faces of frame 9 and sash 10 and completely closes thecrack therebetween. During the lateral springing movement of the weatherstrip 11 by the sash 10 during its closing movement the gasket 16 iscompressed, as shown in Fig. 6, and tightly seals the joint between theframe 9 and weather strip 11. It is, of course, evident that the weatherstrip 11 will be just as efiicient whether applied to the sash 10 or theframe 9, as shown.

Referring now to the invention as shown in Fig. 6, two weather strips 11are employed to seal the cracks between the overlapping flanges ofadjacent pairs. One of these weather strips 11 is secured to the frame 9and the other to the sash 10 and the construction and arrangement ofparts is identical with that shown in Figs. 1 to 5, inclusive, and havethe same reference characters.

The above described weather strip while deto its flange being shaped toedgewise offset the flange from the plane of the weather strip to leaveclearance for a fillet when the weather strip is applied to the angularmember of the frame or sash.

2. A metallic weather strip having at one of its longitudinal edges asubstantially perpendicular flange, said weather strip a'dja cent to itsflange being outwardly bulged on the same side with its flange to form arelatively wide bead that extends longitudinally thereof, and a pliablegasket attached to the opposite side of the weather strip from itsflange and outward of the bead, whereby when the gasket is applied to aframe or sash member the gasket is free to buckle laterally into theconcave side of the bead.

3. The combination with a metallic frame and a metallic sash swingablymounted in the frame, said frame and sash each having a structuralmember, the structural members being laterally spaced apart and onethereof being provided with a substantially perpendicular flange, thefree longitudinal edge portion of the flange being overlapped by theother member when the sash is closed, of a metallic weather stripsecured at one of its longitudinal edges to the member having the flangeand extending edgewise from said member along the inner face of theflange substantially in the plane of the frame and outward of the freelongitudinal edge of the flange, said strip being out of contact withthe flange when the sash is open and arranged to be sprung laterallyinto contact with the flange by the sash during its closing movement.

4. The structure defined in claim 3 which further includes a gasketbetween the flange and the Weather strip and between the two members andarranged to be placed under compression by the weather strip when thesash is closed.

In testimony whereof I afix my signature.

FRANK REESE.

